Question about the synchronization of the two methods...

I have 2 methods:

writeData() //method 1

createNewDataFile() //method 2

the main thread will use method 1 quite frequently. In method 2, a separate thread wakes up every 10 minutes or if some maintenance on the file in method 1 to write. Thus, when the thread is in method 2 I need method 1 for the day before and wait. I also want the opposite, that when the main thread is in the 2-1 method will keep.

Any help is appreciated!

799454 wrote:
So wait,

I thought synchronized only worked on current methods where it is stated:

Using the synchronized keyword requires a lock. Every object has exactly a lock that are associated with him. Once a thread has obtained the lock of an object, no other thread can only obtain this lock (and therefore cannot enter into a canton sync on this lock) until the first thread releases leaving his block of synchronization or by calling wait().

so you're saying that if I declare:

Synchronized, method 1

Synchronized, method 2

then I have a single object with 2 synchronized methods, so if thread A is in EITHER of these methods, the other method will be locked as well?

The method is not "locked" in itself, but yes, 1 item, 2 methods synchronized, if T1 is in both methods, then T2 can enter either method.

I urge you strongly to go through this tutorial or a book on Java concurrency, carefully.

Tags: Java

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